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Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy
Chen XY(陈旭阳); Yu G(虞钢); He XL(何秀丽); Li SX(李少霞); Miao HB(苗海宾)
Source PublicationINTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
2018-04-01
Volume96Issue:2018-01-04Pages:209-222
ISSN0268-3768
AbstractIn order to investigate the effect of droplet impact on molten pool dynamics in hybrid laser-MIG (metal inert gas) welding, a three-dimensional mathematical model was developed, and a new approach to simulate the droplet impact was proposed. In the model, the droplet heat and impact under the influence of laser was considered, and the deformation of molten pool was calculated with considering droplet impact and arc pressure. To simplify the model, a modified body heat source model was presented for laser source to take into account multiple reflections and Fresnel absorption. Surface tension, electromagnetic force, and buoyancy were considered to calculate the fluid flow pattern. Furthermore, several dimensionless numbers were used to recognize the importance of the driving forces in molten pool. It was found that molten pool dynamics and final weld bead geometry were strongly affected by the droplet impact. To demonstrate the importance of droplet impact, the temperature, velocity distribution, and the deformation of molten pool were analyzed and compared under different conditions. With considering droplet impact, the penetration was bigger, and the width was smaller. Furthermore, the simulated weld bead geometry was in good agreement with experimental measurement.
KeywordDroplet impact Hybrid laser-MIG welding Aluminum alloy Molten pool dynamics Simulation
DOI10.1007/s00170-017-1509-1
URL查看原文
Indexed BySCI ; EI
Language英语
WOS IDWOS:000428797500016
WOS KeywordNUMERICAL-SIMULATION ; HEAT-TRANSFER ; GAS-METAL ; TRANSPORT ; MODE ; 304-STAINLESS-STEEL ; SOLIDIFICATION ; SYSTEMS ; STEEL
WOS Research AreaAutomation & Control Systems ; Engineering, Manufacturing
WOS SubjectAutomation & Control Systems ; Engineering
Funding OrganizationNational Natural Science Foundation of China [11272316, 11272317, 11672304, 11502269] ; Chinese Academy of Sciences [yz201636]
Classification二类
Ranking1
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/77807
Collection先进制造工艺力学重点实验室
Affiliation1.Chinese Acad Sci, Inst Mech, Key Lab Mech Adv Mfg, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Chen XY,Yu G,He XL,et al. Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy[J]. INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,2018,96(2018-01-04):209-222.
APA 陈旭阳,虞钢,何秀丽,李少霞,&苗海宾.(2018).Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy.INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY,96(2018-01-04),209-222.
MLA 陈旭阳,et al."Effect of droplet impact on molten pool dynamics in hybrid laser-MIG welding of aluminum alloy".INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY 96.2018-01-04(2018):209-222.
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